The influence of low temperature on photosynthesis and antioxidant enzymes in sensitive banana and tolerant plantain (Musa sp.) cultivars
文献类型: 外文期刊
第一作者: Sun, L. L.
作者: Sun, L. L.;Chen, Y. J.;Peng, C. L.;Zhang, J. Z.;Zhang, J. Z.;Chow, W. S.;Chen, J. W.
作者机构:
关键词: hydrogen peroxide: 7722-84-1;malondialdehyde: 542-78-9;superoxide dismutase: SOD;9054-89-1;EC 1.15.1.1;antioxidant enzyme;reactive oxygen species: ROS;7782-44-7;superoxide radical: 11062-77-4;ascorbate peroxidase: APX;72906-87-7;EC 1.11.1.11;catalase: CAT;9001-05-2;EC 1.11.1.6;DPPH;peroxidase: POD;9003-99-0;EC 1.11.1.7;photochemical efficiency;photosynthetic rate;enzyme activity;crop production;scavenging capability;photosynthesis performance;low temperature influence;cold-tolerance mechanism
期刊名称:PHOTOSYNTHETICA ( 影响因子:3.189; 五年影响因子:3.38 )
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年卷期:
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收录情况: SCI
摘要: Low temperature (LT) is one of the major factors that limit crop production and reduce yield. To better understand the cold-tolerance mechanism in the plantains, a sensitive cultivar Williams (Musa acuminata AAA cv. Williams) and a tolerant cultivar Cachaco (Musa paradisiaca ABB cv. Dajiao) were used. LT resulted in increased malondialdehyde (MDA) content, elevated contents of hydrogen peroxide (H2O2) and superoxide radical (O (2) (center dot-) ), and decreased photochemical efficiency (F-v/F-m) and net photosynthetic rate (P (N)), but cv. Cachaco showed better LT tolerance than cv. Williams. After LT treatment for 120 h, total scavenging capability (DPPH center dot scavenging capability) in Williams showed a significant decrease but no significant alternations was found in Cachaco. Ascorbate peroxidase (APX) and peroxidase (POD) displayed a significant increase but superoxide dismutase (SOD) showed no significant alternations and catalase (CAT) showed a significant decrease in Cachaco after 120 h of LT treatment. All the four antioxidant enzymes above showed a significant decrease in Williams after 120 h of LT treatment. Our results suggest that higher activities of APX, POD, SOD, and DPPH center dot scavenging capability to a certain extent can be used to explain the higher cold tolerance in the plantain, which would provide a theoretical guidance for bananas production and screening cold-resistant variety.
分类号: Q94
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